[Debug | JSON]
1. Have you tried murdering the brain?
2. Samus Sprite Palette Block*
3. Samus Sprite Sheet
4. Samus Status Screen Paper Doll
5. Samus Sprite: T-shirt Cannon Edition
6. Keysanity Doors
7. Don't Make Me Load the Practice Hack
8. Destroy @Shaktool
9. @Shaktool pings random people
10. Tech: canBePatient
11. Tech: canBeVeryPatient
12. Tech: canBeExtremelyPatient
13. Tech: canBeLucky
14. Tech: canBeVeryLucky
15. Tech: canPrepareForNextRoom
16. Tech: canSuitlessLavaDive
17. Tech: canHeatRun
18. Tech: canSuitlessMaridia
19. Tech: canSunkenTileWideWallClimb
20. Tech: canCrossRoomJumpIntoWater
21. Tech: canSpaceJumpWaterBounce
22. Tech: canSpaceJumpWaterEscape
23. Tech: canDisableEquipment
24. Tech: canPlayInSand
25. Tech: canEscapeSand
26. Tech: canSandfallBounce
27. Tech: canSandBombBoost
28. Tech: canSandGrappleBoost
29. Tech: canManageReserves
30. Tech: canPauseAbuse
31. Tech: canReserveDoubleDamageBoost
32. Tech: canPreciseReserveRefill
33. Tech: canDownGrab
34. Tech: canDownBack
35. Tech: canStopOnADime
36. Tech: canMoonwalk
37. Tech: canMoonfall
38. Tech: canMoondance
39. Tech: canExtendedMoondance
40. Tech: canEnemyStuckMoonfall
41. Tech: canFreeFallClip
42. Tech: canResetFallSpeed
43. Tech: canTrivialMidAirMorph
44. Tech: canMidAirMorph
45. Tech: canWallJumpInstantMorph
46. Tech: can3HighWallMidAirMorph
47. Tech: can4HighMidAirMorph
48. Tech: canInsaneMidAirMorph
49. Tech: canRJump
50. Tech: canLateralMidAirMorph
51. Tech: canSpringBallBounce
52. Tech: canTrickySpringBallBounce
53. Tech: canStationaryLateralMidAirMorph
54. Tech: canBounceBall
55. Tech: canMomentumConservingMorph
56. Tech: canMockball
57. Tech: canSpeedball
58. Tech: canTwoTileSqueeze
59. Tech: canCrouchGateClip
60. Tech: canTunnelCrawl
61. Tech: canBufferedMomentumConservingTurnaround
62. Tech: canMomentumConservingTurnaround
63. Tech: canQuickDrop
64. Tech: canMidairWiggle
65. Tech: canOffScreenMovement
66. Tech: canUseGrapple
67. Tech: canPreciseGrapple
68. Tech: canGrappleJump
69. Tech: canPreciseGrappleJump
70. Tech: canTrickyGrappleJump
71. Tech: canBombGrappleJump
72. Tech: canGrappleTeleport
73. Tech: canGrappleTeleportWallEscape
74. Tech: canGrappleBombHang
75. Tech: canUnmorphGrappleHang
76. Tech: canFrozenEnemyGrappleHang
77. Tech: canSuperSink
78. Tech: canMorphTurnaround
79. Tech: canCrouchJump
80. Tech: canTurnaroundSpinJump
81. Tech: canFlatleyJump
82. Tech: canGravityJump
83. Tech: canUseIFrames
84. Tech: canStationarySpinJump
85. Tech: canSpringBallJumpMidAir
86. Tech: canTrickySpringBallJump
87. Tech: canSpringwall
88. Tech: canDoubleSpringBallJumpMidAir
89. Tech: canUnderwaterBombIntoSpringBallJump
90. Tech: canSpringFling
91. Tech: canCrumbleJump
92. Tech: canCarefulJump
93. Tech: canTrickyJump
94. Tech: canInsaneJump
95. Tech: canCWJ
96. Tech: canWallJump
97. Tech: canPreciseWallJump
98. Tech: canTrickyWallJump
99. Tech: canInsaneWallJump
100. Tech: canConsecutiveWallJump
101. Tech: canFastWallJumpClimb
102. Tech: canUnderwaterWallJump / canWackyAssUnderwaterSingleWalljumpShit
103. Tech: canLongUnderwaterWallJump
104. Tech: canBootless2WideUWJ
105. Tech: canJumpIntoRespawningBlock
106. Tech: canUnmorphBombBoost
107. Tech: canWallJumpBombBoost
108. Tech: canBombHorizontally
109. Tech: canHBJ
110. Tech: canIBJ
111. Tech: canLongIBJ
112. Tech: canJumpIntoIBJ
113. Tech: canBombAboveIBJ
114. Tech: canCeilingBombJump
115. Tech: canLongCeilingBombJump
116. Tech: canDiagonalBombJump
117. Tech: canDoubleBombJump
118. Tech: canStaggeredIBJ
119. Tech: canPowerBombMidIBJ
120. Tech: canSpringBallBombJump
121. Tech: canBombJumpWaterEscape
122. Tech: canUseEnemies
123. Tech: canSnailClimb
124. Tech: canNeutralDamageBoost
125. Tech: canHorizontalDamageBoost
126. Tech: canManipulateMellas
127. Tech: canSamusEaterStandUp
128. Tech: canKago
129. Tech: canTrivialUseFrozenEnemies
130. Tech: canUseFrozenEnemies
131. Tech: canMochtroidIceClimb
132. Tech: canTrickyUseFrozenEnemies
133. Tech: canWallIceClip
134. Tech: canCrazyCrabClimb
135. Tech: canMetroidAvoid
136. Tech: canBabyMetroidAvoid
137. Tech: canDodgeWhileShooting
138. Tech: canFarmWhileShooting
139. Tech: canTrickyDodgeEnemies
140. Tech: canEscapeEnemyGrab
141. Tech: canEnemyExtendRunway
142. Tech: canTrickyEnemyExtendRunway
143. Tech: canHitbox
144. Tech: canPseudoScrew
145. Tech: canWallJumpWithCharge
146. Tech: canSpecialBeamAttack
147. Tech: canOffScreenSuperShot
148. Tech: canGateGlitch
149. Tech: canWrapAroundShot
150. Tech: canGrappleClip
151. Tech: canHeroShot
152. Tech: canAutoCancelWeapon
153. Tech: canHyperGateShot
154. Tech: canDash
155. Tech: canSpeedyJump
156. Tech: canTrickyDashJump
157. Tech: canSidePlatformCrossRoomJump
158. Tech: canShinespark
159. Tech: canHorizontalShinespark
160. Tech: canHorizontalMidairShinespark
161. Tech: canShinechargeMovement
162. Tech: canMidairShinespark
163. Tech: canShinesparkDeepStuck
164. Tech: canShinechargeMovementComplex
165. Tech: canShinechargeMovementTricky
166. Tech: canUseSpeedEchoes
167. Tech: canControlShinesparkEnd
168. Tech: canShinesparkSlopeClip
169. Tech: canSlowShortCharge
170. Tech: canCarryFlashSuit
171. Tech: canSpikeSuit
172. Tech: canTrickySpikeSuit
173. Tech: canPatientSpikeSuit
174. Tech: canRiskySpikeSuit
175. Tech: canElevatorCrystalFlash
176. Tech: canSlopeSpark
177. Tech: canRModeCrystalFlashInterrupt
178. Tech: canComplexRModeCrystalFlashInterrupt
179. Tech: canTrickyRModeCrystalFlashInterrupt
180. Tech: canRModeKnockbackSpark
181. Tech: canXModeSpikeSuit
182. Tech: canComplexCarryFlashSuit
183. Tech: canTrickyCarryFlashSuit
184. Tech: canUseFlashSuitInitialSpark
185. Tech: canCarryBlueSuit
186. Tech: canBlueSuitSpikeJump
187. Tech: canRModeSparkInterrupt
188. Tech: canRModePauseAbuseSparkInterrupt
189. Tech: canCrystalSpark
190. Tech: canUnderwaterCrystalSpark
191. Tech: canXModeBlueSuit
192. Tech: canSuperjump
193. Tech: canDoubleXModeBlueSuit
194. Tech: canSpeedKeep
195. Tech: canPreciseSpaceJump
196. Tech: canBlueSpaceJump
197. Tech: canTemporaryBlue
198. Tech: canChainTemporaryBlue
199. Tech: canLongChainTemporaryBlue
200. Tech: canPauseRemorphTemporaryBlue
201. Tech: canWaterShineCharge
202. Tech: canStutterWaterShineCharge
203. Tech: canPreciseStutterWaterShineCharge
204. Tech: canXRayWaitForIFrames
205. Tech: canReserveTriggerBufferXRay
206. Tech: canXRayTurnaround
207. Tech: canXRayCancelShinecharge
208. Tech: canXRayStandUp
209. Tech: canXRayClimb
210. Tech: canLongXRayClimb
211. Tech: canRightSideDoorStuck
212. Tech: canRightSideDoorStuckFromWater
213. Tech: canRightSideDashlessDoorStuck
214. Tech: canXMode
215. Tech: canXModeMovement
216. Tech: canSlopeXMode
217. Tech: canRMode
218. Tech: canRModeStandupClip
219. Tech: canGMode
220. Tech: canComplexGMode
221. Tech: canTrickyGMode
222. Tech: canGModeXRayClimb
223. Tech: canHeatedGMode
224. Tech: canGModeImmobile
225. Tech: canArtificialMorph
226. Tech: canRemoteAcquire
227. Tech: canPowerBombItemOverloadPLMs
228. Tech: canSamusEaterTeleport
229. Tech: canDownwardGModeSetup
230. Tech: canUpwardGModeSetup
231. Tech: canBlueSuitGModeSetup
232. Tech: canAwakenZebes
233. Tech: canRiskPermanentLossOfAccess
234. Tech: canCeilingClip
235. Tech: canXRayCeilingClip
236. Tech: canPreciseCeilingClip
237. Tech: canHighPixelCeilingClip
238. Tech: canPartialFloorClip
239. Tech: canCrystalFlash
240. Tech: canHeatedCrystalFlash
241. Tech: canBombIntoCrystalFlashClip
242. Tech: canJumpIntoCrystalFlashClip
243. Tech: canRefillStation10PowerBombCrystalFlash
244. Tech: can10PowerBombCrystalFlash
245. Tech: canHeated10PowerBombCrystalFlash
246. Tech: canTurnaroundAimCancel
247. Tech: canCameraManip
248. Tech: canDeepTransition
249. Tech: canSkipDoorLock
250. Tech: canUsePowerBombLag
251. Tech: canCount
252. Item: Power Beam*
253. Item: Morph Ball*
254. Item: Bombs*
255. Item: Charge*
256. Item: Hi Jump Boots*
257. Item: Spazer*
258. Item: Varia*
259. Item: Speed Booster*
260. Item: Ice*
261. Item: Grappling Beam*
262. Item: Wave*
263. Item: X-Ray Scope*
264. Item: Gravity*
265. Item: Space Jump*
266. Item: Spring Ball*
267. Item: Plasma*
268. Item: Screw Attack*
269. Item: Wall Jump*
270. Item: Blue Booster*
271. Item: Spark Booster*
272. Item: Energy Tank*
273. Item: Energy Tank*
274. Item: Super*
275. Item: Missile*
276. Item: Reserve Tank*
277. Item: Reserve Tank*
278. Item: Power Bomb*
279. Alcoon*
280. Beetom*
281. Boyon*
282. Choot*
283. Geemer (blue)*
284. Geemer (grey)*
285. Geemer (orange)*
286. Kago*
287. Kamer*
288. Kihunter (green)*
289. Mellow*
290. Reo*
291. Ripper 2 (green)*
292. Sciser*
293. Skree*
294. Skultera*
295. Grey Space Pirate (standing)*
296. Green Space Pirate (standing)*
297. Grey Space Pirate (wall)*
298. Tripper*
299. Waver*
300. Yapping Maw*
301. Zeb*
302. Zebbo*
303. Boulder*
304. Cacatac*
305. Fireflea*
306. Geega*
307. Metaree*
308. Mini-Kraid*
309. Puyo*
310. Ripper*
311. Ripper 2 (red)*
312. Sm. Sidehopper*
313. Zeela*
314. Zero*
315. Atomic*
316. Bull*
317. Covern*
318. Kihunter (yellow)*
319. Workrobot*
320. Evir*
321. Kame (Tatori)*
322. Kame Baby*
323. Menu*
324. Mochtroid*
325. Oum*
326. Owtch*
327. Powamp*
328. Shaktool*
329. Pink Space Pirate (standing)*
330. Pink Space Pirate (wall)*
331. Yard*
332. Zoa*
333. Dessgeega*
334. Dragon*
335. Fune*
336. Gamet*
337. Geruta*
338. Holtz*
339. Kihunter (red)*
340. Magdollite*
341. Mella*
342. Multiviola*
343. Namihe*
344. Puromi*
345. Sm. Dessgeega*
346. Sova*
347. Red Space Pirate (standing)*
348. Yellow Space Pirate (standing)*
349. Yellow Space Pirate (wall)*
350. Space Pirate (fighting)*
351. Squeept*
352. Viola*
353. Sidehopper*
354. Metroid*
355. Rinka*
356. Tourian Space Pirate (all)*
357. Blue Sidehopper*
358. Custom Climb Pirate*
359. Trapped Atomic*
360. Custom Covern (Bull)*
361. Custom Covern (Atomic)*
362. Kzan*
363. Ceres Ridley*
364. Bomb Torizo*
365. Spore Spawn*
366. Kraid*
367. Crocomire*
368. Phantoon*
369. Botwoon 1*
370. Botwoon 2*
371. Reverse Botwoon 1*
372. Reverse Botwoon 2*
373. Draygon*
374. Golden Torizo*
375. Ridley*
376. Mother Brain 1*
377. Mother Brain 2*
378. Mother Brain 3*
379. 58 Escape
380. Acid Snakes Tunnel
381. Acid Statue Room
382. Alpha Power Bomb Room
383. Amphitheatre
384. Aqueduct
385. Aqueduct Save Room
386. Assembly Line
387. Attic
388. Baby Kraid Room
389. Basement
390. Bat Cave
391. Bat Room
392. Below Botwoon Energy Tank
393. Below Spazer
394. Beta Power Bomb Room
395. Big Boy Room
396. Big Pink
397. Big Pink Save Room
398. Billy Mays Room
399. Blue Brinstar Boulder Room
400. Blue Brinstar Elevator Room
401. Blue Brinstar Energy Tank Room
402. Blue Hopper Room
403. Bomb Torizo Room
404. Botwoon Energy Tank Room
405. Botwoon Hallway
406. Botwoon Quicksand Room
407. Botwoon's Room
408. Bowling Alley
409. Bowling Alley Path
410. Boyon Gate Hall
411. Brinstar Map Room
412. Brinstar Pre Map Room
413. Brinstar Reserve Tank Room
414. Bubble Mountain
415. Bubble Mountain Save Room
416. Bug Sand Hole
417. Business Center
418. Butterfly Room
419. Caterpillar Room
420. Caterpillar Save Room
421. Cathedral
422. Cathedral Entrance
423. Ceres Elevator Room
424. Ceres Ridley's Room
425. Climb
426. Colosseum
427. Construction Zone
428. Crab Hole
429. Crab Maze
430. Crab Shaft
431. Crab Tunnel
432. Crateria Kihunter Room
433. Crateria Map Room
434. Crateria Power Bomb Room
435. Crateria Save Room
436. Crateria Super Room
437. Crateria Tube
438. Crocomire Escape
439. Crocomire Save Room
440. Crocomire Speedway
441. Crocomire's Room
442. Crumble Shaft
443. Dachora Energy Refill
444. Dachora Room
445. Dead Scientist Room
446. Double Chamber
447. Draygon Save Room
448. Draygon's Room
449. Dust Torizo Room
450. Early Supers Room
451. East Aqueduct Quicksand Room
452. East Cactus Alley Room
453. East Ocean
454. East Pants Room
455. East Sand Hall
456. East Sand Hole
457. Electric Death Room
458. Etecoon Energy Tank Room
459. Etecoon Save Room
460. Etecoon Super Room
461. Falling Tile Room
462. Fast Pillars Setup Room
463. Fast Ripper Room
464. Final Missile Bombway
465. First Missile Room
466. Fish Tank
467. Flyway
468. Forgotten Highway Elbow
469. Forgotten Highway Elevator
470. Forgotten Highway Kago Room
471. Forgotten Highway Save Room
472. Frog Savestation
473. Frog Speedway
474. Gauntlet Energy Tank Room
475. Gauntlet Entrance
476. Glass Tunnel
477. Glass Tunnel Save Room
478. Golden Torizo Energy Recharge
479. Golden Torizo's Room
480. Grapple Beam Room
481. Grapple Tutorial Room 1
482. Grapple Tutorial Room 2
483. Grapple Tutorial Room 3
484. Gravity Suit Room
485. Green Brinstar Beetom Room
486. Green Brinstar Elevator Room
487. Green Brinstar Fireflea Room
488. Green Brinstar Main Shaft
489. Green Brinstar Main Shaft Save Room
490. Green Brinstar Missile Refill
491. Green Bubbles Missile Room
492. Green Hill Zone
493. Green Pirates Shaft
494. Halfie Climb Room
495. Hellway
496. Hi Jump Boots Room
497. Hi Jump Energy Tank Room
498. Homing Geemer Room
499. Hopper Energy Tank Room
500. Ice Beam Acid Room
501. Ice Beam Gate Room
502. Ice Beam Room
503. Ice Beam Snake Room
504. Ice Beam Tutorial Room
505. Kassiuz Room
506. Kraid Eye Door Room
507. Kraid Recharge Station
508. Kraid Room
509. Kraid Save Room
510. Kronic Boost Room
511. Landing Site
512. Lava Dive Room
513. Lower Mushrooms
514. Lower Norfair Elevator
515. Lower Norfair Elevator Save Room
516. Lower Norfair Escape Power Bomb Room
517. Lower Norfair Farming Room
518. Lower Norfair Fireflea Room
519. Lower Norfair Spring Ball Maze Room
520. Lower Tourian Save Room
521. Magdollite Tunnel
522. Magnet Stairs Room
523. Main Hall
524. Main Street
525. Mama Turtle Room
526. Maridia Elevator Room
527. Maridia Health Refill Room
528. Maridia Map Room
529. Maridia Missile Refill Room
530. Metal Pirates Room
531. Metroid Room 1
532. Metroid Room 2
533. Metroid Room 3
534. Metroid Room 4
535. Mickey Mouse Room
536. Morph Ball Room
537. Mother Brain Room
538. Mt Everest
539. Noob Bridge
540. Norfair Map Room
541. Norfair Reserve Tank Room
542. Northwest Maridia Bug Room
543. Nutella Refill
544. Oasis
545. Pants Room
546. Parlor And Alcatraz
547. Phantoon's Room
548. Pillar Room
549. Pink Brinstar Hopper Room
550. Pink Brinstar Power Bomb Room
551. Pit Room
552. Plasma Beach Quicksand Room
553. Plasma Room
554. Plasma Spark Room
555. Plasma Tutorial Room
556. Plowerhouse Room
557. Post Crocomire Farming Room
558. Post Crocomire Jump Room
559. Post Crocomire Missile Room
560. Post Crocomire Power Bomb Room
561. Post Crocomire Save Room
562. Post Crocomire Shaft
563. Pre Map Flyway
564. Pseudo Plasma Spark Room
565. Purple Farming Room
566. Purple Shaft
567. Red Brinstar Elevator Room
568. Red Brinstar Fireflea Room
569. Red Fish Room
570. Red Kihunter Shaft
571. Red Kihunter Shaft Save Room
572. Red Pirate Shaft
573. Red Tower
574. Ridley Tank Room
575. Ridley's Room
576. Rinka Shaft
577. Rising Tide
578. Screw Attack Room
579. Seaweed Room
580. Shaktool Room
581. Single Chamber
582. Sloaters Refill
583. Space Jump Room
584. Spazer Room
585. Speed Booster Hall
586. Speed Booster Room
587. Spiky Acid Snakes Tunnel
588. Spiky Death Room
589. Spiky Platforms Tunnel
590. Sponge Bath
591. Spore Spawn Farming Room
592. Spore Spawn Kihunter Room
593. Spore Spawn Room
594. Spore Spawn Super Room
595. Spring Ball Room
596. Statues Hallway
597. Statues Room
598. Terminator Room
599. The Final Missile
600. The Moat
601. The Precious Room
602. The Worst Room In The Game
603. Thread The Needle Room
604. Three Musketeers Room
605. Toilet Bowl
606. Tourian Escape Room 1
607. Tourian Escape Room 2
608. Tourian Escape Room 3
609. Tourian Escape Room 4
610. Tourian Eye Door Room
611. Tourian First Room
612. Tourian Recharge Room
613. Upper Norfair Farming Room
614. Upper Tourian Save Room
615. Varia Suit Room
616. Volcano Room
617. Warehouse Energy Tank Room
618. Warehouse Entrance
619. Warehouse Kihunter Room
620. Warehouse Zeela Room
621. Wasteland
622. Watering Hole
623. Waterway Energy Tank Room
624. Wave Beam Room
625. West Aqueduct Quicksand Room
626. West Cactus Alley Room
627. West Glass Tube Tunnel
628. West Ocean
629. West Sand Hall
630. West Sand Hall Tunnel
631. West Sand Hole
632. Wrecked Ship East Super Room
633. Wrecked Ship Energy Tank Room
634. Wrecked Ship Entrance
635. Wrecked Ship Main Shaft
636. Wrecked Ship Map Room
637. Wrecked Ship Save Room
638. Wrecked Ship West Super Room
639. X-Ray Scope Room
640. Release #1*
641. Release #2*
642. Release #3*
643. Release #4*
644. Release #5*
645. Release #6*
646. Release #7*
647. Release #8*
648. Release #9*
649. Release #10*
650. Release #11*
651. Release #12*
652. Release #13*
653. Release #14*
654. Release #15*
655. Release #16*
656. Release #17*
657. Release #18*
658. Release #19*
659. Release #20*
660. Release #21*
661. Release #22*
662. Release #23*
663. Release #24*
664. Release #25*
665. Release #26*
666. Release #27*
667. Release #28*
668. Release #29*
669. Release #30*
670. Release #31*
671. Release #32*
672. Release #33*
673. Release #34*
674. Release #35*
675. Release #36*
676. Release #37*
677. Release #38*
678. Release #39*
679. Release #40*
680. Release #41*
681. Release #42*
682. Release #43*
683. Release #44*
684. Release #45*
685. Release #46*
686. Release #47*
687. Release #48*
688. Release #49*
689. Release #50*
690. Release #51*
691. Release #52*
692. Release #53*
693. Release #54*
694. Release #55*
695. Release #56*
696. Release #57*
697. Release #58*
698. Release #59*
699. Release #60*
700. Release #61*
701. Release #62*
702. Release #63*
703. Release #64*
704. Release #65*
705. Release #66*
706. Release #67*
707. Release #68*
708. Release #69*
709. Release #70*
710. Release #71*
711. Release #72*
712. Release #73*
713. Release #74*
714. Release #75*
715. Release #76*
716. Release #77*
717. Release #78*
718. Release #79*
719. Release #80*
720. Release #81*
721. Release #82*
722. Release #83*
723. Release #84*
724. Release #85*
725. Release #86*
726. Release #87*
727. Release #88*
728. Release #89*
729. Release #90*
730. Release #91*
731. Release #92*
732. Release #93*
733. Release #94*
734. Release #95*
735. Release #96*
736. Release #97*
737. Release #98*
738. Release #99*
739. Release #100*
740. Release #101*
741. Release #102*
742. Release #103*
743. Release #104*
744. Release #105*
745. Release #106*
746. Release #107*
747. Release #108*
748. Release #109*
749. Release #110*
750. Release #111*
751. Release #112*
752. Release #113*
753. Release #114*
754. Release #115*
755. Release #116*
756. Release #117*
757. Release #118*
758. Release #119*
759. Release #120*
760. Release #121*
761. Don't Use ZSNES
762. Game File CRC
763. Permalink Finder*
764. Game File Verifier*
765. RomPatcher.js*
766. Holy Image Debug Menu*
767. Game Dump
768. Game Dump: Classic 2 Magic
769. Game Dump: SuperNT*
770. Game Dump: Retrode 2*
771. The choices are yours and yours alone!
772. Super Metroid Info Page*
773. Link
774. Good Luck
775. Holy Hand Grenade of Antioch*
776. Holy Diver*

Tech: canReserveTriggerBufferXRay - Super Metroid Map Randomizer (canreservetriggerbufferxray)

Starting an automatic reserve transfer while having X-Ray already selected allows the player to buffer
the dash button to instantly start X-Ray Scope and pause time as soon as the reserve transfer finishes.
One side effect of this is that the normal application of heat damage accumulated during a reserve trigger
is prevented.

See also: Tech Page
ALL RANDOS